From invention to innovation

By Neil H. Wasserman

Subjects: Telefon, Telephone, Transmitters and transmission, Telephone, history, Histoire, Technischer Fortschritt, American Telephone and Telegraph Company, Geschichte, Téléphone, Telephone companies, Telefonie, History, Transmissie, Leidingen

Description: By the late nineteenth century, American Bell Telephone had expanded its services across much of the United States. Yet transmission was difficult through overhead wires over distances of more than a few hundred miles, and impossible in cables beyond thirty miles. Wasserman studies the inventions and innovations that made extension possible.